Although water vapor accounts for about 60% of the atmospheric greenhouse effect, it is the increase of in the atmosphere that appears to be the main cause of global warming.

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.